Speaker
Jakobsen & Sauer
Date/Time
Date(s) - 15/05/2023
11:00 - 12:00
The seminar on Monday 15/05 will be given by
Gustav Uhre Jakobsen
Title: Effective-One-Body Resummation of the Classical Gravitational Two-Body System
Abstract:
Perturbative expansions of the gravitational two-body dynamics efficiently describe the dynamics when the bodies are widely separated and the gravitational field is weak.
Analytic results with smaller relative separations and stronger gravitational fields are, however, required for the construction of gravitational waveforms.
In this talk I will present a particular case of the Effective-One-Body approach for resumming perturbative analytic results.
I will focus on resummations of the scattering angle which I compare to results from numerical relativity.
Benjamin Sauer
Title: Bootstrapping Feynman Integrals in the gravitational two body problem
Abstract: There are a lot of modern techniques to calculate multi loop Feynman integrals, which are needed in a lot of calculation in particle physics. A very efficient technique is using the method of regions and differential equations to bootstrap the solution of a big number of Feynman integrals in the small velocity expansion. I will talk about how to apply these techniques in a gravitational scattering calculation at the level of three loop Feynman integrals.